...we begin our lives as noisy dewdrops that will one day learn to crawl, then walk. As science writer Loren Eiseley once put it, people "are a way that water has of going about, beyond the reach of rivers."
Aging = Drying
But then, with every step we take, we begin to dry. The longer we live, the drier we get. One year after birth, a human baby is only 65 percent water – a ten percent drop, says the U.S. Geological Survey.
Babies are wetter than children. By the time we're adults, the USGS says, adult men are about 60 percent water, adult women 55 percent. Elderly people are roughly half water.

Aging can be described in one way as a gradual dessication.

Maybe this is why babies cry so much, they are just trying to shed some of that 75% water they're storing like little sponges of fat. I am going to go drink a glass of water.